Lubricator.



NTTnp STaTns Patented April 11, 1905.

PATnNT Omron.

CORNELIUS CALLAI-IAN, OF CANTON, MASSACHUSETTS, ASSIGNOR TO WILLIAM I).TICKNOR, OF BOSTON, MASSACHUSETTS.

LUBRICATOR.

SPECIFICATION forming' part of Letters Patent No. 786,871, dated April11, 1905.

Application filed December 22, 1904. Serial No. 237,888.

To @ZZ whom, it pta/y concern:

Be it known that I, CORNELIUS CALLAHAN, a citizen of the United States,residing' at Canton, in the county of Norfolk and State ofMassachusetts, have invented an Improvement in Lubricators, of which thefollowing' description, in connection with the accompanying' drawings,is a specification, like numerals on the drawings representing' likeparts.

This invention relates to lubricators of the type known as force-feedlubricators; and it has for its object to provide a simple andinexpensive lubricator of this class which is constructed so that it canbe readily adjusted to regulate the quantity of oil which is fed to thedevice to be lubricated.

My improved lubricator comprises an oilreceptaole having a port, acylinder communicating with the port, a plunger within the cylinder, andplung'er-operating mechanism t0 give the plunger a fixed leng'th ofstroke and adjustably connected to the plunger, and means whereby thecylinder may be adjusted relative to the plunger-operating mechanism,the adjustment of the cylinder and also that of the plunger constitutingmeans for regulating the effective stroke of the plunger, and therebythe quantity of oil which is delivered.

The particular features wherein my invention resides will behereinafter' more fully described, and then pointed out in the claims.

In the drawings, Figure 1 is a vertical central section through alubricator embodying my invention. Fig'. 2 is a section on the line wrv, Fig. 1. Fig. 8 is a section on the line a e, Fig'. 1. Fig'. I is aside elevation of the casing supporting the cam mechanism. Fig. 5 is atop plan view of the cam for operating the plunger. Fig. 6 is a sectionon the line g/ y, Fig'. 8. Fig. 7 is a section on the line a e, Fig'. 1.Fig. 8 is a perspective view of the end of the pawl 16.

3 designates an oil-receptacle of any suitable or usual character havinga port L1 leading to a cylinder 5. Said cylinder is herein shown asarranged horizontally and as being formed 1n any lntegral portion 6 ofthe oilreceptacle, which portion I will hereinafter refer to as the footportion.

Operating within the cylinder 5 is a plunger 7, which is connected to areciprocating member 8, the latter being operatively connected to andoperated by a cam 9. (Best shownI in Fig. Said cam is herein shown asbeing inclosed in a casing 10, the top plate 11 of which has a radialslot 12, through which a portion of the reciprocating member 8 passes,said portion having' a pin 13 thereon, which is received in the groove14 in the cam 9. The cam 9 is operated by means of a ratchetwheel 15,which in this embodiment of my invention is rigid with the cam and isconfined within the casing 10. Said casing has a slot 16() extendingpart way around its periphery and exposing a portion of theratchet-teeth on the ratchet 15. Cooperating with the ratchet 15 is aspring-pressed pawl 16, havinganose 17 to engage the ratchet-teeth,which pawl is pivotally mounted upon a swinging arm 18, the latter forconvenience being' mounted to swing about a stud 19, depending from thecasing containing the cam and ratchet-wheel. For convenience inconstruction I prefer to make the projection or stud 19 integral withthe cap 11, as shown in Fig. 1, in which case said stud or projectionextends through the cam and ratchet-wheel and serves as a bearing forthem and also extends through the bottom of the casing'. I have hereinshown the casing-bottom as provided with the boss 20, on which saidswinging arm 18 is directly mounted, said arm being held in place by asuitable nut 21, screw-threaded on the stud or projection 19. The arm 18is connected, by means of a link 22, to any suitable reciprocating oroscillating part of the machine with which the lubricator is to be used,and therefore said arm has an oscillating movement about the boss 20.the ratchet-wheel 15 and cam 9 are moved forward intermittingly, therebyreciprocating the plunger within the cylinder 5. The plunger is shown inFig. 1 as in its backward position, and as it moves forward or to theleft During such oscillations IO point where the lubrication is to takeplace.

As the plunger moves backwardly or to the right, Fig'. 1, thecheck-valve 24 prevents the oil from being drawn out of the pipe 25, anda partial vacuum is thereby created within the cylinder. As soon as theplunger has been retracted suiiiciently to uncover the port 4 the oilfrom the oil-cup 3 is sucked through the port 4 into the cylinder by thevacuum therein. As the plunger moves forwardly again the oil in thecylinder is forced back into the oil-cup during the first part of thestroke of the plunger, or until the plunger end covers the port 4, andthereafter the oil in the cylinder is forced into the delivery-pipe 25.It will thus be seen that the plunger has a stroke of a fixed length,and the effective stroke of the plunger in forcing oil into thedelivery-pipe is that portion occurring after the plunger has closed theport 4. In order to vary the quantity of oil delivered at cach stroke ofthe plunger, I have made provision for adjusting the cylinder 5 withreferencwegto the plunger-operating mechanism,

"Pct-hereby to carry the port 4 nearer to or farther from thereciprocating' member 8. It will be obvious that if the cylinder 5 ismoved to the right, Fig. 1, thereby to carry the port 4 into thedotted-line position, the plunger will close said port at the verybeginning of its stroke, and therefore the effective stroke of theplunger will be its full stroke, while if said cylinder is moved in theopposite direction the effective stroke of the plunger may be reduced tonothing, if desired. In order to permit this adjustment of the cylinder,I provide the top plate 11 of the casing with guides 26, between whichthe foot portion 6 of the oil-receptacle can be moved back and .foi-th,said oil-receptacle being held in any adjusted position byclamping-screws 27. By this simple expedient of making the oil-reservoirand its foot portion adjustable on the top plate 11 provision is madefor regulating the quantity of oil delivered at each stroke. I have alsoprovided further means for thus regulating the amount of oil bycontrolling the time which the pawl 16 is in engagement with the ratchetduring each oscillation of the arm 18. For this purpose I have provideda shield 28, which is adapted to partially cover the slot 160, saidshield being' carried by the head 29 of an arm 30, which is mounted uponthe boss 2O and which is held in its adjusted position by a suitableset-screw 31. By loosening the set-screw 31 the arm 30 may be swungabout said boss, thereby to carry the shield 28 over more or less of theslot 160. Said shield operates, as will be obvious, to hold the pawl 16out of engagement with the ratchet-wheel during a portion of the strokedependent upon the position of said shield.

32 designates a release device which is designed to throw the pawl outof engagement with the ratchet-wheel before the end of the slot isreached, the purpose of this device being to prevent the nose of thepawl from becoming injured by striking the end of the slot. This releasedevice is adjustably mounted on the cover 1l and is provided with acam-surface 330, adapted to engage the cam-surface 34 on the pawl, andthereby throw the pawl out of engagement with the ratchet. The ratchetis prevented from backward movement by a suitable stop-pawl 36.

It is sometimes desirable to deliver oil from a single oil-receptacle toa plurality of places, and in order to permit this to be done I may, ifdesired, construct the foot portion 6 with a plurality of cylinders 5,as shown in Fig. 2. In such case said oil-receptacle will have a port 4leading to "each cylinder, and a plunger 7 will be employed in eachcylinder, said cylinders all being connected to the reciprocating member8. Each cylinder communicates with a delivery-pipe 25, as seen in Fig.2, and preferably a check-valve will be employed in each delivery-pipeto prevent the oil from being drawn back into the cylinder. Vhere aplurality of plungers are employed, it is sometimes desirable to be ableto adjust the effective stroke of each plunger separately. so tha'tdifferent quantities of oil may be delivered from the differentcylinders. In order to accomplish this, I have provided an adjustableconnection between each plunger and the reciprocating member 8. Oneconvenient ferm of such connection is shown in the drawings, wherein theplunger is simply screw-threaded into the reciprocating member. Bysimply turning any of the plungers within the reciprocating member 8said plunger may be adjusted longitudinally of its cylinder to get thedesired length of effective stroke.,

33 designates suitable lock or check nuts for holding the plungers intheir adjusted positions.

I will preferably provide a valve 35 within the oil-cup for controllingeach port 4, whereby any port may be closed in case it is desired tostop the pumping operation of any c vlinder, said valves being hereinshown as pivotally-mounted plates, which can be swung over the ports 4to close them more or less, as desired.

The embodiment of my invention herein IOO IIC;

illustrated is that which I regard as preferable; but I wish to statethat the invention is not limited to the exact construction hereinshown, and therefore I reserve to myself the right to make all lsuchchanges as come within the scope of the appended claims.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is-

1. In a lubricator, an oil-receptacle having a port, a cylinder withwhich said port communicates, a plunger operating in the cylinder, andplunger-reciprocating mechanism, said cylinder being adjustable relativeto the plungerreciprocating mechanism whereby the length of theeffective stroke of. the plunger can be varied.

2. In a lubricator, a cylinder, an oil-receptacle having a port leadingto the cylinder, a plunger operating in the cylinder, and mechanism toreciprocate the plunger a definite distance at each stroke, saidcylinder being adjustable relative to said mechanism whereby the lengthof the effective stroke of the plunger is regulated.

3. In a lubricator, a cylinder having a port through which oil isdelivered thereto, a plunger within the cylinder, andplunger-reciprocating mechanism adjustably connected to the plunger,said cylinder being' also adjustable in the direction of the length ofthe plunger.

11. In a lubricator, an oil-receptacle having a port, a cylinder withwhich said port communicates, a plunger operating in said cylinder, saidplunger constituting a valve for the port, and plunger-reciprocatingmechanism, said cylinder being adjustable in the direction of the lengthof the plunger.

5. In a lubricator, an oil-receptacle, a plurality oi' cylinders eachcommunicating with the receptacle, a plunger in each cylinder, and meansfor operating the plungers simultaneously, said means operating to giveall the plunger-s the same length of stroke, said cylinders beingadjustable in the direction of the length of the plunger.

6. In a lubricator, an oil-receptacle, a plurality of cylinders eachcommunicating with the receptacle, a plunger operating in each cylinder,and means for simultaneously operating said plungers, said cylindersbeing adjustable in the direction of the length of the plungers.

7. In a lubricator, an oil-receptacle, a plurality ot' cylinders, eachcommunicating with the receptacle, a plunger operating in each cylinder,and a reciprocating member to which said plungers are connected, saidcylinders being adjustable relative to the reciprocating member.

8. In a lubricator, an oil-receptacle, a plurality of cylinders eachcommunicating with the receptacle, a plunger operating in each cylinder,and a reciprocating member to which each plunger is adjustablyconnected, said cylinders being adjustable relative to the reciprocatingmember.

9. In a lubricator, an oil-receptacle, a cylinder communicatingtherewith, a plunger Within the cylinder, said cylinder being adjustablein the direction oi' the length of the plunger, a cam for reciprocatingthe plunger, a ratchet connected to the cam for operating the latter, apawl, means for reciprocating the latter, and means to regulate the timeof engagement between the pawl and ratchet during each stroke.

10. In a lubricator, a slotted plate, a cylinder ad justably mountedthereon, a plunger in the cylinder, a reciprocating member guided bysaid slot and operatively connected to the plunger, and means toreciprocate said member.

11. In a lubricator, a casing inelosing a connected cam andratchet-wheel, the top of said casing being slotted, a cylinder abovethe easing, a plunger within the cylinder, a reciprocating memberconnected to the plunger and operating in said slot, and means toactuate the ratchet-Wheel.

12. In a lubricator, a casing inelosing a connected cam andratchet-wheel, said casing having a peripheral slot and a slotted top, acyl- 'inder above the easing, a plunger within the cylinder, areciprocating member connected to the plunger and operating in the slot,said member being actuated by the cam, and an oscillating pawl workingthrough the peripheral slot of the casing and an adjustable shield topartially cover the slot and thereby regulate the extent of movement ofthe ratchet.

13. In a lubricator, a casing, a connected cam and ratchet within thecasing, said casing having a peripheral slot, an oil-pump operated bysaid cam, an oscillating pawl working in said slot and engaging theratchet, and a release device to disengage the pawl from the ratchet.

14. In a lubricator, a easing, a connected cam and ratchet within thecasing, said casing having a peripheral slot, an oil-pump operated bysaid cam, an oscillating pawl working in said slot and engaging theratchet, and an adjustable release device to disengage the pawl from theratchet.

15. In a lubricator, a slotted member, a cylinder above said member,said cylinder eX- tending parallel to the slot, a plunger within thecylinder, a reciprocating memberadjustably connected to the plunger andguided in its movement by said slot, and a cam beneath said slottedmember for operating the reciprocating member.

IOO

IIO

IO cylinder, a reciprocating member adjustably A connected to theplunger and operating in said slot, and means to actuate the cam.

In testimony whereotl I have signed my name to this specification in thepresence of two subscribing Witnesses.

CORNELIUS CALLAI-IAN.

Witnesses:

Louis C. SMITH, WILLIAM D. 'IICKNOR-

